Techniques for bi-direction preemption indication transmissions

ABSTRACT

Aspects described herein relate to bi-direction preemption indication transmissions. In one example, a node such as an integrated access and backhaul (IAB) node may determine that a set of one or more resources are preempted for use for both an uplink transmission and a downlink transmission, and transmit, to a user equipment (UE), the bi-direction preemption indication indicating that the set of one or more resources are preempted for use for both of the uplink transmission and the downlink transmission. In another example, a UE may receive a bi-direction preemption indication indicating that a set of one or more resources are preempted for use for both an uplink transmission and a downlink transmission, and perform rate matching for both of the uplink transmission and downlink transmission based on the set of one or more resources indicated by the bi-direction preemption indication.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application claims the benefit of U.S. Provisional Application Ser.No. 62/900,370, entitled “TECHNIQUES FOR BI-DIRECTION PREEMPTIONINDICATION TRANSMISSIONS” and filed on Sep. 13, 2019, which is expresslyincorporated by reference herein in its entirety.

BACKGROUND

Aspects of the present disclosure relate generally to wirelesscommunication systems, and more particularly, to bi-direction preemptionindication transmissions.

Wireless communication systems are widely deployed to provide varioustypes of communication content such as voice, video, packet data,messaging, broadcast, and so on. These systems may be multiple-accesssystems capable of supporting communication with multiple users bysharing the available system resources (e.g., time, frequency, andpower). Examples of such multiple-access systems include code-divisionmultiple access (CDMA) systems, time-division multiple access (TDMA)systems, frequency-division multiple access (FDMA) systems, andorthogonal frequency-division multiple access (OFDMA) systems, andsingle-carrier frequency division multiple access (SC-FDMA) systems.

These multiple access technologies have been adopted in varioustelecommunication standards to provide a common protocol that enablesdifferent wireless devices to communicate on a municipal, national,regional, and even global level. For example, a fifth generation (5G)wireless communications technology (which can be referred to as NR) isenvisaged to expand and support diverse usage scenarios and applicationswith respect to current mobile network generations. In an aspect, 5Gcommunications technology can include: enhanced mobile broadbandaddressing human-centric use cases for access to multimedia content,services and data; ultra-reliable-low latency communications (URLLC)with certain specifications for latency and reliability; and massivemachine type communications, which can allow a very large number ofconnected devices and transmission of a relatively low volume ofnon-delay-sensitive information.

For example, for various communications technology such as, but notlimited to NR, full duplex communication with respect to integratedaccess and backhaul (IAB) implementations may increase transmissionspeed and flexibility but also transmission complexity. Thus,improvements in wireless communication operations may be desired.

SUMMARY

The following presents a simplified summary of one or more aspects inorder to provide a basic understanding of such aspects. This summary isnot an extensive overview of all contemplated aspects, and is intendedto neither identify key or critical elements of all aspects nordelineate the scope of any or all aspects. Its sole purpose is topresent some concepts of one or more aspects in a simplified form as aprelude to the more detailed description that is presented later.

According to an example, a method of wireless communication at a userequipment (UE) is provided. The method may include receiving abi-direction preemption indication indicating that a set of one or moreresources are preempted for use for both an uplink transmission and adownlink transmission. The method may further include performing ratematching for both of the uplink transmission and downlink transmissionbased on the set of one or more resources indicated by the bi-directionpreemption indication.

In a further aspect, the present disclosure includes an apparatus forwireless communication including a memory and at least one processorcoupled to the memory. The at least one processor may be configured toreceive a bi-direction preemption indication indicating that a set ofone or more resources are preempted for use for both an uplinktransmission and a downlink transmission. The at least one processor maybe configured to perform rate matching for both of the uplinktransmission and downlink transmission based on the set of one or moreresources indicated by the bi-direction preemption indication.

In an additional aspect, the present disclosure includes an apparatusfor wireless communication including means for receiving a bi-directionpreemption indication indicating that a set of one or more resources arepreempted for use for both an uplink transmission and a downlinktransmission. The apparatus may further include means for performingrate matching for both of the uplink transmission and downlinktransmission based on the set of one or more resources indicated by thebi-direction preemption indication.

In yet another aspect, the present disclosure includes a non-transitorycomputer-readable medium storing computer executable code, the code whenexecuted by a processor cause the processor to receive a bi-directionpreemption indication indicating that a set of one or more resources arepreempted for use for both an uplink transmission and a downlinktransmission, and perform rate matching for both of the uplinktransmission and downlink transmission based on the set of one or moreresources indicated by the bi-direction preemption indication.

According to another example, a method of wireless communication at anode is provided. The method may include determining that a set of oneor more resources are preempted for use for both an uplink transmissionand a downlink transmission. The method further include transmitting, toa UE, the bi-direction preemption indication indicating that the set ofone or more resources are preempted for use for both of the uplinktransmission and the downlink transmission.

In a further aspect, the present disclosure includes an apparatus forwireless communication including a memory and at least one processorcoupled to the memory. The at least one processor may be configured todetermine that a set of one or more resources are preempted for use forboth an uplink transmission and a downlink transmission. The at leastone processor may be configured to transmit, to a UE, the bi-directionpreemption indication indicating that the set of one or more resourcesare preempted for use for both of the uplink transmission and thedownlink transmission.

In an additional aspect, the present disclosure includes an apparatusfor wireless communication including means for determining that a set ofone or more resources are preempted for use for both an uplinktransmission and a downlink transmission. The apparatus further includesmeans for transmitting, to a UE, the bi-direction preemption indicationindicating that the set of one or more resources are preempted for usefor both of the uplink transmission and the downlink transmission.

In yet another aspect, the present disclosure includes a non-transitorycomputer-readable medium storing computer executable code, the code whenexecuted by a processor cause the processor to determine that a set ofone or more resources are preempted for use for both an uplinktransmission and a downlink transmission, and transmit, to a UE, thebi-direction preemption indication indicating that the set of one ormore resources are preempted for use for both of the uplink transmissionand the downlink transmission.

To the accomplishment of the foregoing and related ends, the one or moreaspects comprise the features hereinafter fully described andparticularly pointed out in the claims. The following description andthe annexed drawings set forth in detail certain illustrative featuresof the one or more aspects. These features are indicative, however, ofbut a few of the various ways in which the principles of various aspectsmay be employed, and this description is intended to include all suchaspects and their equivalents.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosed aspects will hereinafter be described in conjunction withthe appended drawings, provided to illustrate and not to limit thedisclosed aspects, wherein like designations denote like elements, andin which:

FIG. 1 illustrates an example of a wireless communication system, inaccordance with various aspects of the present disclosure;

FIG. 2 is a block diagram illustrating an example of a network entity(also referred to as a base station), in accordance with various aspectsof the present disclosure;

FIG. 3 is a block diagram illustrating an example of a user equipment(UE), in accordance with various aspects of the present disclosure;

FIG. 4 is a diagram of an example integrated access and backhaul (IAB)system, in accordance with various aspects of the present disclosure;

FIG. 5 is a flow chart illustrating an example of a method for wirelesscommunications at a UE, in accordance with various aspects of thepresent disclosure;

FIG. 6 is a flow chart illustrating an example of a method for wirelesscommunications at a node such as an IAB node in accordance with variousaspects of the present disclosure;

FIG. 7 is a block diagram illustrating an example of a MIMOcommunication system including a base station and a UE, in accordancewith various aspects of the present disclosure.

DETAILED DESCRIPTION

Various aspects are now described with reference to the drawings. In thefollowing description, for purposes of explanation, numerous specificdetails are set forth in order to provide a thorough understanding ofone or more aspects. It may be evident, however, that such aspect(s) maybe practiced without these specific details.

The described features generally relate to bi-direction preemptionindication transmissions in an integrated access and backhaul (IAB)system where one or more nodes employ full-duplex communication.Specifically, base stations may include a backhaul interface forcommunication with a backhaul portion of the network. The backhaul mayprovide a link between a base station and a core network, and in someexamples, the backhaul may provide interconnection between therespective base stations. The core network is a part of a wirelesscommunication system that is generally independent of the radio accesstechnology used in the radio access network.

Various types of backhaul interfaces may be employed, such as a directphysical connection, a virtual network, or the like using any suitabletransport network. Some base stations may be configured as IAB nodes,where the wireless spectrum may be used both for access links (i.e.,wireless links with user equipments (UEs)), and for backhaul links,which may be referred to as wireless self-backhauling. By using wirelessself-backhauling, rather than requiring each new base station deploymentto be outfitted with its own hard-wired backhaul connection, thewireless spectrum utilized for communication between the base stationand UE may be leveraged for backhaul communication, enabling fast andeasy deployment of highly dense small cell networks.

Further, network entities such as base stations and UEs may employfull-duplex operations, where such entities may both receive andtransmit signals simultaneously. Specifically, a common or samefrequency and time resource may be used for downlink and uplinktransmission. For example, as shown in FIG. 6 , in an IAB system, for afull-duplex slot, the full-duplex IAB node can simultaneously transmituplink data towards the parent-node, and receive the uplink data fromthe UE and/or child node. The IAB node may also transmit downlink datatowards the child node, and receive the downlink data from the parentnode.

In previous implementations, downlink preemption indication may beintroduced to signal to the UE that no downlink transmissions on anindicated time/frequency resource of an indicated cell may occur. Thetransmissions may be used for ultra reliable low latency communication(URLLC). In some aspects, downlink preemption indications of up to ninecells may be carried in a group control PDCCH (GC-PDCCH) scrambled by aninterruption radio network temporary identifier (INT-RNTI), which mayidentify a pre-emption in the downlink. This GC-PDCCH may haveconfigurable monitoring periodicity, which can be multiple of slots withminimum of one slot. Further, the downlink preemption indication percell may be fourteen bits, indicating the cell's time/frequency resourcehaving no downlink transmission between two adjacent monitoringoccasions. However, in the case of full-duplex operation, each endsimultaneously performs reception and transmission. In this case, itwould be desirable to extend bi-direction preemption indicationtransmissions to signal to the UE that no downlink and uplinktransmissions will occur on an indicated set of resources.

In one implementation, a UE in an IAB system may receive a bi-directionpreemption indication indicating that a set of one or more resources arepreempted for use for both an uplink transmission and a downlinktransmission. The UE may further perform rate matching for both of theuplink transmission and downlink transmission based on the set of one ormore resources indicated by the bi-direction preemption indication.

In another implementation, a node such as an IAB node in an IAB systemmay determine that a set of one or more resources are preempted for usefor both an uplink transmission and a downlink transmission. The nodemay further transmit, to a UE, the bi-direction preemption indicationindicating that the set of one or more resources are preempted for usefor both of the uplink transmission and the downlink transmission.

The described features will be presented in more detail below withreference to FIGS. 1-7 .

As used in this application, the terms “component,” “module,” “system”and the like are intended to include a computer-related entity, such asbut not limited to hardware, software, a combination of hardware andsoftware, or software in execution. For example, a component may be, butis not limited to being, a process running on a processor, a processor,an object, an executable, a thread of execution, a program, and/or acomputer. By way of illustration, both an application running on acomputing device and the computing device can be a component. One ormore components can reside within a process and/or thread of executionand a component can be localized on one computer and/or distributedbetween two or more computers. In addition, these components can executefrom various computer readable media having various data structuresstored thereon. The components can communicate by way of local and/orremote processes such as in accordance with a signal having one or moredata packets, such as data from one component interacting with anothercomponent in a local system, distributed system, and/or across a networksuch as the Internet with other systems by way of the signal. Softwareshall be construed broadly to mean instructions, instruction sets, code,code segments, program code, programs, subprograms, software modules,applications, software applications, software packages, routines,subroutines, objects, executables, threads of execution, procedures,functions, etc., whether referred to as software, firmware, middleware,microcode, hardware description language, or otherwise.

Techniques described herein may be used for various wirelesscommunication systems such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA, andother systems. The terms “system” and “network” may often be usedinterchangeably. A CDMA system may implement a radio technology such asCDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000covers IS-2000, IS-95, and IS-856 standards. IS-2000 Releases 0 and Aare commonly referred to as CDMA2000 1×, 1×, etc. IS-856 (TIA-856) iscommonly referred to as CDMA2000 1×EV-DO, High Rate Packet Data (HRPD),etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. ATDMA system may implement a radio technology such as Global System forMobile Communications (GSM). An OFDMA system may implement a radiotechnology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA),IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM™, etc.UTRA and E-UTRA are part of Universal Mobile Telecommunication System(UMTS). 3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are newreleases of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, andGSM are described in documents from an organization named “3rdGeneration Partnership Project” (3GPP). CDMA2000 and UMB are describedin documents from an organization named “3rd Generation PartnershipProject 2” (3GPP2). The techniques described herein may be used for thesystems and radio technologies mentioned above as well as other systemsand radio technologies, including cellular (e.g., LTE) communicationsover a shared radio frequency spectrum band. The description below,however, describes an LTE/LTE-A system for purposes of example, and LTEterminology is used in much of the description below, although thetechniques are applicable beyond LTE/LTE-A applications (e.g., to fifthgeneration (5G) NR networks or other next generation communicationsystems).

The following description provides examples, and is not limiting of thescope, applicability, or examples set forth in the claims. Changes maybe made in the function and arrangement of elements discussed withoutdeparting from the scope of the disclosure. Various examples may omit,substitute, or add various procedures or components as appropriate. Forinstance, the methods described may be performed in an order differentfrom that described, and various steps may be added, omitted, orcombined. Also, features described with respect to some examples may becombined in other examples.

Various aspects or features will be presented in terms of systems thatcan include a number of devices, components, modules, and the like. Itis to be understood and appreciated that the various systems can includeadditional devices, components, modules, etc. and/or may not include allof the devices, components, modules etc. discussed in connection withthe figures. A combination of these approaches can also be used.

FIG. 1 is a diagram illustrating an example of a wireless communicationssystem and an access network 100. The wireless communications system(also referred to as a wireless wide area network (WWAN)) can includebase stations 102, UEs 104, an Evolved Packet Core (EPC) 160, and/or a5G Core (5GC) 190. The base stations 102, which may also be referred toas network entities, may include macro cells (high power cellular basestation) and/or small cells (low power cellular base station). The macrocells can include base stations. The small cells can include femtocells,picocells, and microcells. In an example, the base stations 102 may alsoinclude gNBs 180, as described further herein.

In one example, some nodes such as UE 104 of the wireless communicationsystem may have a modem 340 and communicating component 342 forperforming rate matching for both of the uplink transmission anddownlink transmission based on the set of one or more resourcesindicated by the bi-direction preemption indication, as describedherein. In another example, some nodes acting as an IAB node, such asbase station 102/gNB 180, may have a modem 240 and communicatingcomponent 242 for bi-direction preemption indication transmissions, asdescribed herein. Though a UE 104 is shown as having the modem 340 andcommunicating component 342 and a base station 102/gNB 180 is shown ashaving the modem 240 and communicating component 242, this is oneillustrative example, and substantially any node or type of node actingas an IAB node may include a modem 240 and communicating component 242for providing corresponding functionalities described herein.

The base stations 102 configured for 4G LTE (which can collectively bereferred to as Evolved Universal Mobile Telecommunications System (UMTS)Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC160 through backhaul links 132 (e.g., using an S1 interface). The basestations 102 configured for 5G NR (which can collectively be referred toas Next Generation RAN (NG-RAN)) may interface with 5GC 190 throughbackhaul links 184. In addition to other functions, the base stations102 may perform one or more of the following functions: transfer of userdata, radio channel ciphering and deciphering, integrity protection,header compression, mobility control functions (e.g., handover, dualconnectivity), inter-cell interference coordination, connection setupand release, load balancing, distribution for non-access stratum (NAS)messages, NAS node selection, synchronization, radio access network(RAN) sharing, multimedia broadcast multicast service (MBMS), subscriberand equipment trace, RAN information management (RIM), paging,positioning, and delivery of warning messages. The base stations 102 maycommunicate directly or indirectly (e.g., through the EPC 160 or 5GC190) with each other over backhaul links 134 (e.g., using an X2interface). The backhaul links 132, 134 and/or 184 may be wired orwireless.

The base stations 102 may wirelessly communicate with one or more UEs104. Each of the base stations 102 may provide communication coveragefor a respective geographic coverage area 110. There may be overlappinggeographic coverage areas 110. For example, the small cell 102′ may havea coverage area 110′ that overlaps the coverage area 110 of one or moremacro base stations 102. A network that includes both small cell andmacro cells may be referred to as a heterogeneous network. Aheterogeneous network may also include Home Evolved Node Bs (eNBs)(HeNBs), which may provide service to a restricted group, which can bereferred to as a closed subscriber group (CSG). The communication links120 between the base stations 102 and the UEs 104 may include uplink(UL) (also referred to as reverse link) transmissions from a UE 104 to abase station 102 and/or downlink (DL) (also referred to as forward link)transmissions from a base station 102 to a UE 104. The communicationlinks 120 may use multiple-input and multiple-output (MIMO) antennatechnology, including spatial multiplexing, beamforming, and/or transmitdiversity. The communication links may be through one or more carriers.The base stations 102/UEs 104 may use spectrum up to Y MHz (e.g., 5, 10,15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in a carrieraggregation of up to a total of Yx MHz (e.g., for x component carriers)used for transmission in the DL and/or the UL direction. The carriersmay or may not be adjacent to each other. Allocation of carriers may beasymmetric with respect to DL and UL (e.g., more or less carriers may beallocated for DL than for UL). The component carriers may include aprimary component carrier and one or more secondary component carriers.A primary component carrier may be referred to as a primary cell (PCell)and a secondary component carrier may be referred to as a secondary cell(SCell).

In another example, certain UEs 104 may communicate with each otherusing device-to-device (D2D) communication link 158. The D2Dcommunication link 158 may use the DL/UL WWAN spectrum. The D2Dcommunication link 158 may use one or more sidelink channels, such as aphysical sidelink broadcast channel (PSBCH), a physical sidelinkdiscovery channel (PSDCH), a physical sidelink shared channel (PSSCH),and a physical sidelink control channel (PSCCH). D2D communication maybe through a variety of wireless D2D communications systems, such as forexample, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE802.11 standard, LTE, or NR.

The wireless communications system may further include a Wi-Fi accesspoint (AP) 150 in communication with Wi-Fi stations (STAs) 152 viacommunication links 154 in a 5 GHz unlicensed frequency spectrum. Whencommunicating in an unlicensed frequency spectrum, the STAs 152/AP 150may perform a clear channel assessment (CCA) prior to communicating inorder to determine whether the channel is available.

The small cell 102′ may operate in a licensed and/or an unlicensedfrequency spectrum. When operating in an unlicensed frequency spectrum,the small cell 102′ may employ NR and use the same 5 GHz unlicensedfrequency spectrum as used by the Wi-Fi AP 150. The small cell 102′,employing NR in an unlicensed frequency spectrum, may boost coverage toand/or increase capacity of the access network.

A base station 102, whether a small cell 102′ or a large cell (e.g.,macro base station), may include an eNB, gNodeB (gNB), or other type ofbase station. Some base stations, such as gNB 180 may operate in atraditional sub 6 GHz spectrum, in millimeter wave (mmW) frequencies,and/or near mmW frequencies in communication with the UE 104. When thegNB 180 operates in mmW or near mmW frequencies, the gNB 180 may bereferred to as an mmW base station. Extremely high frequency (EHF) ispart of the RF in the electromagnetic spectrum. EHF has a range of 30GHz to 300 GHz and a wavelength between 1 millimeter and 10 millimeters.Radio waves in the band may be referred to as a millimeter wave. NearmmW may extend down to a frequency of 3 GHz with a wavelength of 100millimeters. The super high frequency (SHF) band extends between 3 GHzand 30 GHz, also referred to as centimeter wave. Communications usingthe mmW/near mmW radio frequency band has extremely high path loss and ashort range. The mmW base station 180 may utilize beamforming 182 withthe UE 104 to compensate for the extremely high path loss and shortrange. A base station 102 referred to herein can include a gNB 180.

The EPC 160 may include a Mobility Management Entity (MME) 162, otherMMEs 164, a Serving Gateway 166, a Multimedia Broadcast MulticastService (MBMS) Gateway 168, a Broadcast Multicast Service Center (BM-SC)170, and a Packet Data Network (PDN) Gateway 172. The MME 162 may be incommunication with a Home Subscriber Server (HSS) 174. The MME 162 isthe control node that processes the signaling between the UEs 104 andthe EPC 160. Generally, the MME 162 provides bearer and connectionmanagement. All user Internet protocol (IP) packets are transferredthrough the Serving Gateway 166, which itself is connected to the PDNGateway 172. The PDN Gateway 172 provides UE IP address allocation aswell as other functions. The PDN Gateway 172 and the BM-SC 170 areconnected to the IP Services 176. The IP Services 176 may include theInternet, an intranet, an IP Multimedia Subsystem (IMS), a PS StreamingService, and/or other IP services. The BM-SC 170 may provide functionsfor MBMS user service provisioning and delivery. The BM-SC 170 may serveas an entry point for content provider MBMS transmission, may be used toauthorize and initiate MBMS Bearer Services within a public land mobilenetwork (PLMN), and may be used to schedule MBMS transmissions. The MBMSGateway 168 may be used to distribute MBMS traffic to the base stations102 belonging to a Multicast Broadcast Single Frequency Network (MBSFN)area broadcasting a particular service, and may be responsible forsession management (start/stop) and for collecting eMBMS relatedcharging information.

The 5GC 190 may include a Access and Mobility Management Function (AMF)192, other AMFs 193, a Session Management Function (SMF) 194, and a UserPlane Function (UPF) 195. The AMF 192 may be in communication with aUnified Data Management (UDM) 196. The AMF 192 can be a control nodethat processes the signaling between the UEs 104 and the 5GC 190.Generally, the AMF 192 can provide QoS flow and session management. UserInternet protocol (IP) packets (e.g., from one or more UEs 104) can betransferred through the UPF 195. The UPF 195 can provide UE IP addressallocation for one or more UEs, as well as other functions. The UPF 195is connected to the IP Services 197. The IP Services 197 may include theInternet, an intranet, an IP Multimedia Subsystem (IMS), a PS StreamingService, and/or other IP services.

The base station may also be referred to as a gNB, Node B, evolved NodeB (eNB), an access point, a base transceiver station, a radio basestation, a radio transceiver, a transceiver function, a basic serviceset (BSS), an extended service set (ESS), a transmit reception point(TRP), or some other suitable terminology. The base station 102 providesan access point to the EPC 160 or 5GC 190 for a UE 104. Examples of UEs104 include a cellular phone, a smart phone, a session initiationprotocol (SIP) phone, a laptop, a personal digital assistant (PDA), asatellite radio, a positioning system (e.g., satellite, terrestrial), amultimedia device, a video device, a digital audio player (e.g., MP3player), a camera, a game console, a tablet, a smart device, robots,drones, an industrial/manufacturing device, a wearable device (e.g., asmart watch, smart clothing, smart glasses, virtual reality goggles, asmart wristband, smart jewelry (e.g., a smart ring, a smart bracelet)),a vehicle/a vehicular device, a meter (e.g., parking meter, electricmeter, gas meter, water meter, flow meter), a gas pump, a large or smallkitchen appliance, a medical/healthcare device, an implant, asensor/actuator, a display, or any other similar functioning device.Some of the UEs 104 may be referred to as IoT devices (e.g., meters,pumps, monitors, cameras, industrial/manufacturing devices, appliances,vehicles, robots, drones, etc.). IoT UEs may include MTC/enhanced MTC(eMTC, also referred to as CAT-M, Cat M1) UEs, NB-IoT (also referred toas CAT NB1) UEs, as well as other types of UEs. In the presentdisclosure, eMTC and NB-IoT may refer to future technologies that mayevolve from or may be based on these technologies. For example, eMTC mayinclude FeMTC (further eMTC), eFeMTC (enhanced further eMTC), mMTC(massive MTC), etc., and NB-IoT may include eNB-IoT (enhanced NB-IoT),FeNB-IoT (further enhanced NB-IoT), etc. The UE 104 may also be referredto as a station, a mobile station, a subscriber station, a mobile unit,a subscriber unit, a wireless unit, a remote unit, a mobile device, awireless device, a wireless communications device, a remote device, amobile subscriber station, an access terminal, a mobile terminal, awireless terminal, a remote terminal, a handset, a user agent, a mobileclient, a client, or some other suitable terminology.

Turning now to FIGS. 2-5 , aspects are depicted with reference to one ormore components and one or more methods that may perform the actions oroperations described herein, where aspects in dashed line may beoptional. Although the operations described below in FIGS. 4 and 5 arepresented in a particular order and/or as being performed by an examplecomponent, it should be understood that the ordering of the actions andthe components performing the actions may be varied, depending on theimplementation. Moreover, it should be understood that the followingactions, functions, and/or described components may be performed by aspecially-programmed processor, a processor executingspecially-programmed software or computer-readable media, or by anyother combination of a hardware component and/or a software componentcapable of performing the described actions or functions.

Referring to FIG. 2 , one example of an implementation of a node actingas an IAB node, such as base station 102 (e.g., a base station 102and/or gNB 180, as described above) may include a variety of components,some of which have already been described above and are describedfurther herein, including components such as one or more processors 212and memory 216 and transceiver 202 in communication via one or morebuses 344, which may operate in conjunction with modem 240 and/orcommunicating component 242 for bi-direction preemption indicationtransmissions. In some aspects, the communicating component 242 mayinclude a bi-direction preemption indication 244 (for transmission)indicating that the set of one or more resources are preempted for usefor both of the uplink transmission and the downlink transmission. Thecommunicating component 242 may also include a full duplex indicationthat identifies support for a full duplex mode. The communicatingcomponent 242 may further include re-interpretation indicator 250indicating to re-interpret the uplink preemption indication and thedownlink preemption indication as a bi-direction preemption indication244.

In an aspect, the one or more processors 212 can include a modem 240and/or can be part of the modem 240 that uses one or more modemprocessors. Thus, the various functions related to communicatingcomponent 242 may be included in modem 240 and/or processors 212 and, inan aspect, can be executed by a single processor, while in otheraspects, different ones of the functions may be executed by acombination of two or more different processors. For example, in anaspect, the one or more processors 212 may include any one or anycombination of a modem processor, or a baseband processor, or a digitalsignal processor, or a transmit processor, or a receiver processor, or atransceiver processor associated with transceiver 202. In other aspects,some of the features of the one or more processors 212 and/or modem 240associated with communicating component 242 may be performed bytransceiver 202.

Also, memory 216 may be configured to store data used herein and/orlocal versions of applications 275 or communicating component 242 and/orone or more of its subcomponents being executed by at least oneprocessor 212. Memory 216 can include any type of computer-readablemedium usable by a computer or at least one processor 212, such asrandom access memory (RAM), read only memory (ROM), tapes, magneticdiscs, optical discs, volatile memory, non-volatile memory, and anycombination thereof. In an aspect, for example, memory 216 may be anon-transitory computer-readable storage medium that stores one or morecomputer-executable codes defining communicating component 242 and/orone or more of its subcomponents, and/or data associated therewith, whenbase station 102 is operating at least one processor 212 to executecommunicating component 242 and/or one or more of its subcomponents.

Transceiver 202 may include at least one receiver 206 and at least onetransmitter 208. Receiver 206 may include hardware and/or softwareexecutable by a processor for receiving data, the code comprisinginstructions and being stored in a memory (e.g., computer-readablemedium). Receiver 206 may be, for example, a radio frequency (RF)receiver. In an aspect, receiver 206 may receive signals transmitted byat least one base station 102. Additionally, receiver 206 may processsuch received signals, and also may obtain measurements of the signals,such as, but not limited to, Ec/Io, signal-to-noise ratio (SNR),reference signal received power (RSRP), received signal strengthindicator (RSSI), etc. Transmitter 208 may include hardware and/orsoftware executable by a processor for transmitting data, the codecomprising instructions and being stored in a memory (e.g.,computer-readable medium). A suitable example of transmitter 208 mayincluding, but is not limited to, an RF transmitter.

Moreover, in an aspect, base station 102 may include RF front end 288,which may operate in communication with one or more antennas 265 andtransceiver 202 for receiving and transmitting radio transmissions, forexample, wireless communications transmitted by at least one basestation 102 or wireless transmissions transmitted by UE 104. RF frontend 288 may be connected to one or more antennas 265 and can include oneor more low-noise amplifiers (LNAs) 290, one or more switches 292, oneor more power amplifiers (PAs) 298, and one or more filters 296 fortransmitting and receiving RF signals. The antennas 265 may include oneor more antennas, antenna elements, and/or antenna arrays.

In an aspect, LNA 290 can amplify a received signal at a desired outputlevel. In an aspect, each LNA 290 may have a specified minimum andmaximum gain values. In an aspect, RF front end 288 may use one or moreswitches 292 to select a particular LNA 290 and its specified gain valuebased on a desired gain value for a particular application.

Further, for example, one or more PA(s) 298 may be used by RF front end288 to amplify a signal for an RF output at a desired output powerlevel. In an aspect, each PA 298 may have specified minimum and maximumgain values. In an aspect, RF front end 288 may use one or more switches292 to select a particular PA 298 and its specified gain value based ona desired gain value for a particular application.

Also, for example, one or more filters 296 can be used by RF front end288 to filter a received signal to obtain an input RF signal. Similarly,in an aspect, for example, a respective filter 296 can be used to filteran output from a respective PA 298 to produce an output signal fortransmission. In an aspect, each filter 296 can be connected to aspecific LNA 290 and/or PA 298. In an aspect, RF front end 288 can useone or more switches 292 to select a transmit or receive path using aspecified filter 296, LNA 290, and/or PA 298, based on a configurationas specified by transceiver 202 and/or processor 212.

As such, transceiver 202 may be configured to transmit and receivewireless signals through one or more antennas 265 via RF front end 288.In an aspect, transceiver may be tuned to operate at specifiedfrequencies such that UE 104 can communicate with, for example, one ormore base stations 102 or one or more cells associated with one or morebase stations 102. In an aspect, for example, modem 240 can configuretransceiver 202 to operate at a specified frequency and power levelbased on the UE configuration of the UE 104 and the communicationprotocol used by modem 240.

In an aspect, modem 240 can be a multiband-multimode modem, which canprocess digital data and communicate with transceiver 202 such that thedigital data is sent and received using transceiver 202. In an aspect,modem 240 can be multiband and be configured to support multiplefrequency bands for a specific communications protocol. In an aspect,modem 240 can be multimode and be configured to support multipleoperating networks and communications protocols. In an aspect, modem 240can control one or more components of UE 104 (e.g., RF front end 288,transceiver 202) to enable transmission and/or reception of signals fromthe network based on a specified modem configuration. In an aspect, themodem configuration can be based on the mode of the modem and thefrequency band in use. In another aspect, the modem configuration can bebased on UE configuration information associated with UE 104 as providedby the network during cell selection and/or cell reselection.

In an aspect, the processor(s) 212 may correspond to one or more of theprocessors described in connection with the UE in FIG. 7 . Similarly,the memory 216 may correspond to the memory described in connection withthe UE in FIG. 7 .

Referring to FIG. 3 , one example of an implementation of UE 104 mayinclude a variety of components, some of which have already beendescribed above and are described further herein, including componentssuch as one or more processors 312 and memory 316 and transceiver 302 incommunication via one or more buses 344, which may operate inconjunction with modem 340 and/or communication component 342 forperforming rate matching for both of the uplink transmission anddownlink transmission based on the set of one or more resourcesindicated by the bi-direction preemption indication 244.

The transceiver 302, receiver 306, transmitter 308, one or moreprocessors 312, memory 316, applications 375, buses 344, RF front end388, LNAs 390, switches 392, filters 396, PAs 398, and one or moreantennas 365 may be the same as or similar to the correspondingcomponents of base station 102, as described above, but configured orotherwise programmed for base station operations as opposed to basestation operations.

In an aspect, the processor(s) 312 may correspond to one or more of theprocessors described in connection with the base station in FIG. 7 .Similarly, the memory 316 may correspond to the memory described inconnection with the base station in FIG. 7 .

Turning now to FIGS. 4 and 5 , aspects are depicted with reference toone or more components and one or more methods that may perform theactions or operations described herein, where aspects in dashed line maybe optional. Although the operations described below in FIGS. 4 and 5are presented in a particular order and/or as being performed by anexample component, it should be understood that the ordering of theactions and the components performing the actions may be varied,depending on the implementation. Moreover, it should be understood thatthe following actions, functions, and/or described components may beperformed by reference to one or more components of FIGS. 2, 3 and/or 7, as described herein, a specially-programmed processor, a processorexecuting specially-programmed software or computer-readable media, orby any other combination of a hardware component and/or a softwarecomponent capable of performing the described actions or functions.

FIG. 4 illustrates a flow chart of an example of a method 400 forwireless communication at a UE. In an example, a UE 104 can perform thefunctions described in method 400 using one or more of the componentsdescribed in FIGS. 1, 3, and 7 .

At block 402, the method 400 may receive a bi-direction preemptionindication indicating that a set of one or more resources are preemptedfor use for both an uplink transmission and a downlink transmission. Inan aspect, the communication component 342, e.g., in conjunction withprocessor(s) 312, memory 316, and/or transceiver 302, may be configuredto receive a bi-direction preemption indication 244 indicating that aset of one or more resources 246 are preempted for use for both anuplink transmission and a downlink transmission. Thus, the UE 104, theprocessor(s) 312, the communication component 342 or one of itssubcomponents may define the means for receiving a bi-directionpreemption indication indicating that a set of one or more resources arepreempted for use for both an uplink transmission and a downlinktransmission.

At block 404, the method 400 may performing rate matching for both ofthe uplink transmission and downlink transmission based on the set ofone or more resources indicated by the bi-direction preemptionindication. In an aspect, the communication component 342, e.g., inconjunction with processor(s) 312, memory 316, and/or transceiver 302,may be configured to perform rate matching for both of the uplinktransmission and downlink transmission based on the set of one or moreresources 246 indicated by the bi-direction preemption indication 244.For example, the communication component 342 may exclude the set of oneor more resources 246 from a set of resources to be used for both theuplink transmission and the downlink transmission. Thus, the UE 104, theprocessor(s) 312, the communication component 342 or one of itssubcomponents may define the means for performing rate matching for bothof the uplink transmission and downlink transmission based on the set ofone or more resources indicated by the bi-direction preemptionindication.

In some aspects, the set of one or more resources 246 may be in time,frequency, spatial domain, or any combination thereof.

In some aspects, the rate matching for the downlink transmission mayinclude demodulating and decoding of information bits on resources notoverlapping with the set of one or more (preempted) resources 246 (whichare not used for downlink transmission).

In some aspects, the rate matching for the uplink transmission mayinclude modulating and encoding of information bits on resources notoverlapping with the set of one or more (preempted) resources 246 (whichare not used for uplink transmission).

In some aspects, receiving the bi-direction preemption indication 244may include receiving a GC-PDCCH scrambled by a unique RNTI associatedwith the bi-direction preemption indication 244.

In some aspects, the bi-direction preemption indication 244 may be oneof a plurality of different bi-direction preemption indications for aplurality of cells carried by the GC-PDCCH.

In some aspects, a monitoring periodicity of the GC-PDCCH may beconfigurable.

In some aspects, receiving the bi-direction preemption indication 244may include receiving a GC-PDCCH including a unique bit that identifieseach preemption indication carried by the GC-PDCCH as a bi-directionpreemption indication.

In some aspects, receiving the bi-direction preemption indication 244may include receiving the bi-direction preemption indication having aunique bit that identifies the corresponding preemption indication asthe bi-direction preemption indication.

In some aspects, receiving the bi-direction preemption indication 244may include receiving on a dedicated control resource set associatedwith the bi-direction preemption indication within a search space.

In some aspects, receiving the bi-direction preemption indication 244may include receiving on a control resource set within a dedicatedsearch space associated with the bi-direction preemption indication.

In some aspects, receiving the bi-direction preemption indication 244may include receiving during a current monitoring occasion, and whereinthe set of one or more time/frequency resources 246 is between thecurrent monitoring occasion and a next monitoring occasion.

Although not shown, in some aspects, the method 400 may includedetermining that a current mode of communication is a full duplex mode,identifying that the bi-direction preemption indication 244 comprises anuplink preemption indication or a downlink preemption indication, anddetermining that the bi-direction preemption indication 244 indicatesthat the set of one or more resources 246 are preempted for use for bothof the uplink transmission and the downlink transmission in response todetermining the current mode is the full duplex mode.

Although not shown, in some aspects, the method 400 may includereceiving a full duplex indication via at least one of a radio resourceconnection (RRC) message, a media access control (MAC) control element(CE), or downlink control information (DCI), where determining that thecurrent mode of communication is the full duplex mode is based on thefull duplex indication.

Although not shown, in some aspects, the method 400 may includetransmitting a full duplex capability indication 248 that identifiessupport for the full duplex mode, and where receiving the full duplexindication is in response to the transmitting of the full duplexcapability indication.

Although not shown, in some aspects, the method 400 may includereceiving a preemption indication re-interpretation indicator 250indicating to re-interpret the uplink preemption indication and thedownlink preemption indication as the bi-direction preemption indication244, where determining that the bi-direction preemption indicationindicates that the set of one or more resources 246 are preempted foruse for both of the uplink transmission and the downlink transmissionfurther in response to the receiving of the preemption indicationre-interpretation indicator 250.

In some aspects, the UE may be a node in an IAB system.

FIG. 5 illustrates a flow chart of an example of a method 500 forwireless communication at a node, which may be an IAB node. In anexample, a base station 102 can perform the functions described inmethod 500 using one or more of the components described in FIGS. 1, 2,and 7 .

At block 502, the method 500 may determine that a set of one or moreresources are preempted for use for both an uplink transmission and adownlink transmission. In one example, the data can be associated with apriority level. In an aspect, the communicating component 242, e.g., inconjunction with processor(s) 212, memory 216, and/or transceiver 202,may be configured to determine that a set of one or more resources arepreempted for use for both an uplink transmission and a downlinktransmission. In one example, the data can be associated with a prioritylevel. Thus, the base station 102, the processor(s) 212, thecommunicating component 242 or one of its subcomponents may define themeans for determining that a set of one or more resources are preemptedfor use for both an uplink transmission and a downlink transmission. Inone example, the data can be associated with a priority level.

At block 504, the method 500 may transmit, to a UE, the bi-directionpreemption indication indicating that the set of one or more resourcesare preempted for use for both of the uplink transmission and thedownlink transmission. In an aspect, the communicating component 242,e.g., in conjunction with processor(s) 212, memory 216, and/ortransceiver 202, may be configured to transmit, to a UE, thebi-direction preemption indication 244 indicating that the set of one ormore resources 246 are preempted for use for both of the uplinktransmission and the downlink transmission. Thus, the base station 102,the processor(s) 212, the communicating component 242 or one of itssubcomponents may define the means for transmitting, to a UE, thebi-direction preemption indication indicating that the set of one ormore resources are preempted for use for both of the uplink transmissionand the downlink transmission.

In some aspects, the bi-direction preemption indication 244 may triggerrate matching for both of the uplink transmission and downlinktransmission based on the set of one or more resources 246.

In some aspects, the set of one or more resources 246 may be in time,frequency, spatial domain, or any combination thereof.

In some aspects, transmitting the preemption indication 244 may includetransmitting a GC-PDCCH scrambled by a unique RNTI associated with thebi-direction preemption indication 244.

In some aspects, the bi-direction preemption indication 244 may be oneof a plurality of different bi-direction preemption indications for aplurality of cells carried by the GC-PDCCH.

In some aspects, a monitoring periodicity of the GC-PDCCH isconfigurable.

In some aspects, transmitting the bi-direction preemption indication 244may include transmitting a GC-PDCCH including a unique bit thatidentifies each preemption indication carried by the GC-PDCCH as abi-direction preemption indication.

In some aspects, transmitting the bi-direction preemption indication 244may include transmitting the bi-direction preemption indication having aunique bit that identifies the corresponding preemption indication as abi-direction preemption indication.

In some aspects, transmitting the bi-direction preemption indication 244may include transmitting on a dedicated control resource set associatedwith the bi-direction preemption indication within a search space.

In some aspects, transmitting the bi-direction preemption indication 244may include transmitting on a control resource set within a dedicatedsearch space associated with the bi-direction preemption indication.

In some aspects, transmitting the bi-direction preemption indication 244may include transmitting during a current monitoring occasion, andwherein the set of one or more time/frequency resources is between thecurrent monitoring occasion and a next monitoring occasion.

In some aspects, although not shown, the method 500 may further includetransmitting a full duplex indication via at least one of a RRC message,a MAC CE, or DCI, and receiving a full duplex capability indication 248that identifies support for a full duplex mode.

In some aspects, although not shown, the method 500 may further includetransmitting a preemption indication re-interpretation indicator 250indicating to re-interpret the uplink preemption indication and thedownlink preemption indication as a bi-direction preemption indication.

Further, FIG. 6 is a diagram of an uplink and downlink communicationscheme in an IAB system 600, as described herein. In one example, theIAB system 600 may include an IAB node 604, which may be similar to orthe same as the base station 102. The IAB system 600 may further includea parent node 602, a child node 606, and a UE 104. For example, in anIAB system, for a full-duplex slot, the full-duplex IAB node 604 cansimultaneously transmit uplink data towards the parent node 602, andreceive the uplink data from the UE 104 and/or child node 606. The IABnode 604 may also transmit downlink data towards the child node 606, andreceive the downlink data from the parent node 602.

The IAB node 604 may include the communicating component 242, which maybe configured to determine that a set of one or more resources 246 arepreempted for use for both an uplink transmission and a downlinktransmission, and to transmit, to a UE, the bi-direction preemptionindication 244 indicating that the set of one or more resources 246 arepreempted for use for both of the uplink transmission and the downlinktransmission. Further, the UE 104 may include the communicationcomponent 342, which may be configured to receive a bi-directionpreemption indication 244 indicating that a set of one or more resources246 are preempted for use for both an uplink transmission and a downlinktransmission, and perform rate matching for both of the uplinktransmission and downlink transmission based on the set of one or moreresources indicated by the bi-direction preemption indication.

In some aspects, in case of bi-direction communications, e.g. fullduplex operation, bi-direction preemption indication can be introducedto signal UE no downlink and uplink transmission on indicated resources,which may be reserved for URLLC traffic. The bi-direction preemptionindication of multiple cells can be carried in a GC-PDCCH scrambled by aspecial RNTI. This GC-PDCCH has configurable monitoring periodicity,e.g. multiple of slots with minimum of 1 slot, and may be sent over anyserving cell or a dedicated cell, e.g. PCell.

The bi-direction preemption indication per cell indicates the cell'stime/frequency resource having no downlink and uplink transmission,where the indicated resource can be between current and next monitoringoccasions. The bi-direction preemption indication can be differentiatedfrom downlink or uplink preemption indication by using a different RNTIor by a dedicated bit in the bi-direction preemption indication or inGC-PDCCH.

In some aspects, in case of full duplex operation, downlink or uplinkpreemption indication can be re-interpreted as the bi-directionpreemption indication with no downlink or uplink transmission onresources indicated by downlink or uplink preemption indication. Fullduplex operation may be indicated by gNB via RRC/MAC-CE/DCI. Full duplexoperation may be indicated only for UEs indicating support of fullduplex operation. Re-interpretation may be dynamically indicated by gNBvia RRC/MAC-CE/DCI.

FIG. 7 is a block diagram of a MIMO communication system 700 including abase station 102, which may be acting as an IAB node or a parent node,and a UE 104. The MIMO communication system 900 may illustrate aspectsof the wireless communication access network 100 described withreference to FIG. 1 . The base station 102 may be an example of aspectsof the base station 102 described with reference to FIG. 1 . The basestation 102 may be equipped with antennas 734 and 735, and the UE 104may be equipped with antennas 752 and 753. In the MIMO communicationsystem 700, the base station 102 may be able to send data over multiplecommunication links at the same time. Each communication link may becalled a “layer” and the “rank” of the communication link may indicatethe number of layers used for communication. For example, in a 2×2 MIMOcommunication system where base station 102 transmits two “layers,” therank of the communication link between the base station 102 and the UE104 is two.

At the base station 102, a transmit (Tx) processor 720 may receive datafrom a data source. The transmit processor 720 may process the data. Thetransmit processor 720 may also generate control symbols or referencesymbols. A transmit MIMO processor 730 may perform spatial processing(e.g., precoding) on data symbols, control symbols, or referencesymbols, if applicable, and may provide output symbol streams to thetransmit modulator/demodulators 732 and 733. Each modulator/demodulator732 through 733 may process a respective output symbol stream (e.g., forOFDM, etc.) to obtain an output sample stream. Eachmodulator/demodulator 732 through 733 may further process (e.g., convertto analog, amplify, filter, and upconvert) the output sample stream toobtain a DL signal. In one example, DL signals frommodulator/demodulators 732 and 733 may be transmitted via the antennas734 and 735, respectively.

The UE 104 may be an example of aspects of the UEs 104 described withreference to FIGS. 1 and 2 . At the UE 104, the UE antennas 752 and 753may receive the DL signals from the base station 102 and may provide thereceived signals to the modulator/demodulators 754 and 755,respectively. Each modulator/demodulator 754 through 755 may condition(e.g., filter, amplify, downconvert, and digitize) a respective receivedsignal to obtain input samples. Each modulator/demodulator 754 through755 may further process the input samples (e.g., for OFDM, etc.) toobtain received symbols. A MIMO detector 756 may obtain received symbolsfrom the modulator/demodulators 754 and 755, perform MIMO detection onthe received symbols, if applicable, and provide detected symbols. Areceive (Rx) processor 758 may process (e.g., demodulate, deinterleave,and decode) the detected symbols, providing decoded data for the UE 104to a data output, and provide decoded control information to a processor980, or memory 982.

The processor 780 may in some cases execute stored instructions toinstantiate a communicating component 242 (see e.g., FIGS. 1 and 2 ).

On the uplink (UL), at the UE 104, a transmit processor 764 may receiveand process data from a data source. The transmit processor 764 may alsogenerate reference symbols for a reference signal. The symbols from thetransmit processor 764 may be precoded by a transmit MIMO processor 766if applicable, further processed by the modulator/demodulators 754 and755 (e.g., for SC-FDMA, etc.), and be transmitted to the base station102 in accordance with the communication parameters received from thebase station 102. At the base station 102, the UL signals from the UE104 may be received by the antennas 734 and 735, processed by themodulator/demodulators 732 and 733, detected by a MIMO detector 736 ifapplicable, and further processed by a receive processor 738. Thereceive processor 738 may provide decoded data to a data output and tothe processor 740 or memory 742.

The components of the UE 104 may, individually or collectively, beimplemented with one or more ASICs adapted to perform some or all of theapplicable functions in hardware. Each of the noted modules may be ameans for performing one or more functions related to operation of theMIMO communication system 900. Similarly, the components of the basestation 102 may, individually or collectively, be implemented with oneor more ASICs adapted to perform some or all of the applicable functionsin hardware. Each of the noted components may be a means for performingone or more functions related to operation of the MIMO communicationsystem 900.

SOME FURTHER EXAMPLES

In one example, a method of wireless communications by a user equipment(UE), comprises receiving a bi-direction preemption indicationindicating that a set of one or more resources are preempted for use forboth an uplink transmission and a downlink transmission, and performingrate matching for both of the uplink transmission and downlinktransmission based on the set of one or more resources indicated by thebi-direction preemption indication.

One or more of the above examples can further include wherein the set ofone or more resources are in time, frequency, spatial domain, or anycombination thereof.

One or more of the above examples can further include wherein the ratematching for the downlink transmission includes demodulating anddecoding of information bits on resources not overlapping with the setof one or more resources.

One or more of the above examples can further include wherein the ratematching for the uplink transmission includes modulating and encoding ofinformation bits on resources not overlapping with the set of one ormore resources.

One or more of the above examples can further include wherein receivingthe bi-direction preemption indication includes receiving a group commonphysical downlink control channel (GC-PDCCH) scrambled by a unique radionetwork temporary identifier (RNTI) associated with the bi-directionpreemption indication.

One or more of the above examples can further include wherein thebi-direction preemption indication is one of a plurality of differentbi-direction preemption indications for a plurality of cells carried bythe GC-PDCCH.

One or more of the above examples can further include wherein amonitoring periodicity of the GC-PDCCH is configurable.

One or more of the above examples can further include wherein receivingthe bi-direction preemption indication includes receiving a GC-PDCCHincluding a unique bit that identifies each preemption indicationcarried by the GC-PDCCH as a bi-direction preemption indication.

One or more of the above examples can further include wherein receivingthe bi-direction preemption indication includes receiving thebi-direction preemption indication having a unique bit that identifiesthe corresponding preemption indication as the bi-direction preemptionindication.

One or more of the above examples can further include wherein receivingthe bi-direction preemption indication includes receiving on a dedicatedcontrol resource set associated with the bi-direction preemptionindication within a search space.

One or more of the above examples can further include wherein receivingthe bi-direction preemption indication includes receiving on a controlresource set within a dedicated search space associated with thebi-direction preemption indication.

One or more of the above examples can further include wherein receivingthe bi-direction preemption indication includes receiving during acurrent monitoring occasion, and wherein the set of one or moretime/frequency resources is between the current monitoring occasion anda next monitoring occasion.

One or more of the above examples can further include determining that acurrent mode of communication is a full duplex mode; identifying thatthe bi-direction preemption indication comprises an uplink preemptionindication or a downlink preemption indication; and determining that thebi-direction preemption indication indicates that the set of one or moreresources are preempted for use for both of the uplink transmission andthe downlink transmission in response to determining the current mode isthe full duplex mode.

One or more of the above examples can further include receiving a fullduplex indication via at least one of a radio resource connection (RRC)message, a media access control (MAC) control element (CE), or downlinkcontrol information (DCI); wherein determining that the current mode ofcommunication is the full duplex mode based on the full duplexindication.

One or more of the above examples can further include transmitting afull duplex capability indication that identifies support for the fullduplex mode; and wherein receiving the full duplex indication is inresponse to the transmitting of the full duplex capability indication.

One or more of the above examples can further include receiving apreemption indication re-interpretation indicator indicating tore-interpret the uplink preemption indication and the downlinkpreemption indication as the bi-direction preemption indication; andwherein determining that the bi-direction preemption indicationindicates that the set of one or more resources are preempted for usefor both of the uplink transmission and the downlink transmissionfurther in response to the receiving of the preemption indicationre-interpretation indicator.

In another example, a method of wireless communications by a node,comprising determining that a set of one or more resources are preemptedfor use for both an uplink transmission and a downlink transmission;transmitting, to a UE, the bi-direction preemption indication indicatingthat the set of one or more resources are preempted for use for both ofthe uplink transmission and the downlink transmission.

One or more of the above examples can further include wherein thebi-direction preemption indication triggers rate matching for both ofthe uplink transmission and downlink transmission based on the set ofone or more resources.

One or more of the above examples can further include wherein the set ofone or more resources are in time, frequency, spatial domain, or anycombination thereof.

One or more of the above examples can further include wherein receivingthe preemption indication includes receiving a GC-PDCCH scrambled by aunique RNTI associated with the bi-direction preemption indication.

One or more of the above examples can further include wherein thebi-direction preemption indication is one of a plurality of differentbi-direction preemption indications for a plurality of cells carried bythe GC-PDCCH.

One or more of the above examples can further include wherein amonitoring periodicity of the GC-PDCCH is configurable.

One or more of the above examples can further include wherein receivingthe bi-direction preemption indication includes receiving a GC-PDCCHincluding a unique bit that identifies each preemption indicationcarried by the GC-PDCCH as a bi-direction preemption indication.

One or more of the above examples can further include wherein receivingthe bi-direction preemption indication includes receiving thebi-direction preemption indication having a unique bit that identifiesthe corresponding preemption indication as a bi-direction preemptionindication.

One or more of the above examples can further include wherein receivingthe bi-direction preemption indication includes receiving on a dedicatedcontrol resource set associated with the bi-direction preemptionindication within a search space.

One or more of the above examples can further include wherein receivingthe bi-direction preemption indication includes receiving on a controlresource set within a dedicated search space associated with thebi-direction preemption indication.

One or more of the above examples can further include receiving thebi-direction preemption indication includes receiving during a currentmonitoring occasion, and wherein the set of one or more time/frequencyresources is between the current monitoring occasion and a nextmonitoring occasion.

One or more of the above examples can further include transmitting afull duplex indication via at least one of: a RRC message, a MAC CE, orDCI; and receiving a full duplex capability indication that identifiessupport for a full duplex mode.

One or more of the above examples can further include transmitting apreemption indication re-interpretation indicator indicating tore-interpret the uplink preemption indication and the downlinkpreemption indication as a bi-direction preemption indication.

One or more of the above examples can further include wherein the nodeis an IAB node in an IAB system.

The above detailed description set forth above in connection with theappended drawings describes examples and does not represent the onlyexamples that may be implemented or that are within the scope of theclaims. The term “example,” when used in this description, means“serving as an example, instance, or illustration,” and not “preferred”or “advantageous over other examples.” The detailed description includesspecific details for the purpose of providing an understanding of thedescribed techniques. These techniques, however, may be practicedwithout these specific details. In some instances, well-known structuresand apparatuses are shown in block diagram form in order to avoidobscuring the concepts of the described examples.

Information and signals may be represented using any of a variety ofdifferent technologies and techniques. For example, data, instructions,commands, information, signals, bits, symbols, and chips that may bereferenced throughout the above description may be represented byvoltages, currents, electromagnetic waves, magnetic fields or particles,optical fields or particles, computer-executable code or instructionsstored on a computer-readable medium, or any combination thereof.

The various illustrative blocks and components described in connectionwith the disclosure herein may be implemented or performed with aspecially-programmed device, such as but not limited to a processor, adigital signal processor (DSP), an ASIC, a FPGA or other programmablelogic device, a discrete gate or transistor logic, a discrete hardwarecomponent, or any combination thereof designed to perform the functionsdescribed herein. A specially-programmed processor may be amicroprocessor, but in the alternative, the processor may be anyconventional processor, controller, microcontroller, or state machine. Aspecially-programmed processor may also be implemented as a combinationof computing devices, e.g., a combination of a DSP and a microprocessor,multiple microprocessors, one or more microprocessors in conjunctionwith a DSP core, or any other such configuration.

The functions described herein may be implemented in hardware, software,or any combination thereof. If implemented in software executed by aprocessor, the functions may be stored on or transmitted over as one ormore instructions or code on a non-transitory computer-readable medium.Other examples and implementations are within the scope and spirit ofthe disclosure and appended claims. For example, due to the nature ofsoftware, functions described above can be implemented using softwareexecuted by a specially programmed processor, hardware, hardwiring, orcombinations of any of these. Features implementing functions may alsobe physically located at various positions, including being distributedsuch that portions of functions are implemented at different physicallocations. Moreover, the term “or” is intended to mean an inclusive “or”rather than an exclusive “or.” That is, unless specified otherwise, orclear from the context, the phrase, for example, “X employs A or B” isintended to mean any of the natural inclusive permutations. That is, forexample the phrase “X employs A or B” is satisfied by any of thefollowing instances: X employs A; X employs B; or X employs both A andB. Also, as used herein, including in the claims, “or” as used in a listof items prefaced by “at least one of” indicates a disjunctive list suchthat, for example, a list of “at least one of A, B, or C” means A or Bor C or AB or AC or BC or ABC (A and B and C).

Computer-readable media includes both computer storage media andcommunication media including any medium that facilitates transfer of acomputer program from one place to another. A storage medium may be anyavailable medium that can be accessed by a general purpose or specialpurpose computer. By way of example, and not limitation,computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or otheroptical disk storage, magnetic disk storage or other magnetic storagedevices, or any other medium that can be used to carry or store desiredprogram code means in the form of instructions or data structures andthat can be accessed by a general-purpose or special-purpose computer,or a general-purpose or special-purpose processor. Also, any connectionis properly termed a computer-readable medium. For example, if thesoftware is transmitted from a website, server, or other remote sourceusing a coaxial cable, fiber optic cable, twisted pair, digitalsubscriber line (DSL), or wireless technologies such as infrared, radio,and microwave, then the coaxial cable, fiber optic cable, twisted pair,DSL, or wireless technologies such as infrared, radio, and microwave areincluded in the definition of medium. Disk and disc, as used herein,include compact disc (CD), laser disc, optical disc, digital versatiledisc (DVD), floppy disk and Blu-ray disc where disks usually reproducedata magnetically, while discs reproduce data optically with lasers.Combinations of the above are also included within the scope ofcomputer-readable media.

The previous description of the disclosure is provided to enable aperson skilled in the art to make or use the disclosure. Variousmodifications to the disclosure will be readily apparent to thoseskilled in the art, and the common principles defined herein may beapplied to other variations without departing from the spirit or scopeof the disclosure. Furthermore, although elements of the describedaspects and/or embodiments may be described or claimed in the singular,the plural is contemplated unless limitation to the singular isexplicitly stated. Additionally, all or a portion of any aspect and/orembodiment may be utilized with all or a portion of any other aspectand/or embodiment, unless stated otherwise. Thus, the disclosure is notto be limited to the examples and designs described herein but is to beaccorded the widest scope consistent with the principles and novelfeatures disclosed herein.

What is claimed is:
 1. A method of wireless communications by a userequipment (UE), comprising: receiving a bi-direction preemptionindication indicating that a set of one or more resources are preemptedfor use for both an uplink transmission and a downlink transmission,wherein receiving the bi-direction preemption indication comprises:identifying that the bi-direction preemption indication comprises anuplink preemption indication or a downlink preemption indication;receiving a preemption indication re-interpretation indicator indicatingto re-interpret the uplink preemption indication and the downlinkpreemption indication as the bi-direction on preemption indication;identifying that the bi-direction preemption indication indicates thatthe set of one or more resources are preempted for use for both of theuplink transmission and the downlink transmission based on a currentmode of communication corresponding to a full duplex mode and thepreemption indication re-interpretation indicator; and performing ratematching for both of the uplink transmission and the downlinktransmission based on the set of one or more resources indicated by thebi-direction preemption indication.
 2. The method of claim 1, whereinthe rate matching for the downlink transmission includes demodulatingand decoding of information bits on resources not overlapping with theset of one or more resources.
 3. The method of claim 1, wherein the ratematching for the uplink transmission includes modulating and encoding ofinformation bits on resources not overlapping with the set of one ormore resources.
 4. The method of claim 1, wherein receiving thebi-direction preemption indication includes receiving a group commonphysical downlink control channel (GC-PDCCH) scrambled by a unique radionetwork temporary identifier (RNTI) associated with the bi-directionpreemption indication.
 5. The method of claim 4, wherein thebi-direction preemption indication is one of a plurality of differentbi-direction preemption indications for a plurality of cells carried bythe GC-PDCCH.
 6. The method of claim 4, wherein a monitoring periodicityof the GC-PDCCH is configurable.
 7. The method of claim 1, whereinreceiving the bi-direction preemption indication includes receiving agroup common physical downlink control channel (GC-PDCCH) including aunique bit that identifies each preemption indication carried by theGC-PDCCH as the bi-direction preemption indication.
 8. The method ofclaim 1, wherein receiving the bi-direction preemption indicationincludes receiving the bi-direction preemption indication having aunique bit that identifies the bi-direction preemption indication. 9.The method of claim 1, wherein receiving the bi-direction preemptionindication includes: receiving on a dedicated control resource setassociated with the bi-direction preemption indication within a searchspace, or receiving on a control resource set within a dedicated searchspace associated with the bi-direction preemption indication.
 10. Themethod of claim 1, wherein the bi-direction preemption indication isreceived during a current monitoring occasion, and wherein the set ofone or more resources is between the current monitoring occasion and anext monitoring occasion.
 11. The method of claim 1, further comprising:receiving a full duplex indication via at least one of: a radio resourceconnection (RRC) message, a media access control (MAC) control element(CE), or downlink control information (DCI), wherein determining thatthe current mode of communication is the full duplex mode based on thefull duplex indication.
 12. The method of claim 11, further comprising:transmitting a full duplex capability indication that identifies supportfor the full duplex mode; and wherein receiving the full duplexindication is in response to the transmitting of the full duplexcapability indication.
 13. A method of wireless communications by anode, comprising: determining that a set of one or more resources arepreempted for use for both an uplink transmission and a downlinktransmission; transmitting, to a user equipment (UE), a bi-directionpreemption indication indicating that the set of one or more resourcesare preempted for use for both of the uplink transmission and thedownlink transmission; and transmitting a preemption indicationre-interpretation indicator indicating to re-interpret the uplinkpreemption indication and the downlink preemption indication as thebi-direction preemption indication.
 14. The method of claim 13, whereinthe bi-direction preemption indication triggers rate matching for bothof the uplink transmission and the downlink transmission based on theset of one or more resources.
 15. The method of claim 13, whereintransmitting the bi-direction preemption indication includestransmitting a group common physical downlink control channel (GC-PDCCH)scrambled by a unique radio network temporary identifier (RNTI)associated with the bi-direction preemption indication, and wherein amonitoring periodicity of the GC-PDCCH is configurable.
 16. The methodof claim 15, wherein the bi-direction preemption indication is one of aplurality of different bi-direction preemption indications for aplurality of cells carried by the GC-PDCCH.
 17. The method of claim 13,wherein transmitting the bi-direction preemption indication includestransmitting a group common physical downlink control channel (GC-PDCCH)including a unique bit that identifies each preemption indicationcarried by the GC-PDCCH as the bi-direction preemption indication. 18.The method of claim 13, wherein transmitting the bi-direction preemptionindication includes transmitting the bi-direction preemption indicationhaving a unique bit that identifies the bi-direction preemptionindication.
 19. The method of claim 13, wherein transmitting thebi-direction preemption indication includes: transmitting on a dedicatedcontrol resource set associated with the bi-direction preemptionindication within a search space, or transmitting on a control resourceset within a dedicated search space associated with the bi-directionpreemption indication.
 20. The method of claim 13, wherein transmittingthe bi-direction preemption indication includes transmitting during acurrent monitoring occasion, and wherein the set of one or moreresources is between the current monitoring occasion and a nextmonitoring occasion.
 21. The method of claim 13, further comprising:transmitting a full duplex indication via at least one of: a radioresource connection (RRC) message, a media access control (MAC) controlelement (CE), or downlink control information (DCI), and receiving afull duplex capability indication that identifies support for a fullduplex mode.
 22. An apparatus for wireless communication, comprising: atransceiver; a memory configured to store instructions; and at least oneprocessor communicatively coupled with the transceiver and the memory,wherein the at least one processor is configured to: receive abi-direction preemption indication indicating that a set of one or moreresources are preempted for use for both an uplink transmission and adownlink transmission, wherein receiving the bi-direction preemptionindication comprises: identify that the bi-direction preemptionindication comprises an uplink preemption indication or a downlinkpreemption indication; receive a preemption indication re-interpretationindicator indicating to re-interpret the uplink preemption indicationand the downlink preemption indication as the bi-direction on preemptionindication; identify that the bi-direction preemption indicationindicates that the set of one or more resources are preempted for usefor both of the uplink transmission and the downlink transmission basedon a current mode of communication corresponding to a full duplex modeand the preemption indication re-interpretation indicator; and performrate matching for both of the uplink transmission and the downlinktransmission based on the set of one or more resources indicated by thebi-direction preemption indication.
 23. The apparatus of claim 22,wherein the rate matching for the downlink transmission includesdemodulating and decoding of information bits on resources notoverlapping with the set of one or more resources.
 24. The apparatus ofclaim 22, wherein to receive the bi-direction preemption indication, theat least one processor is further configured to receive a group commonphysical downlink control channel (GC-PDCCH) scrambled by a unique radionetwork temporary identifier (RNTI) associated with the bi-direction onpreemption indication.
 25. An apparatus for wireless communication,comprising: a transceiver; a memory configured to store instructions;and at least one processor communicatively coupled with the transceiverand the memory, wherein the at least one processor is configured to:determine that a set of one or more resources are preempted for use forboth an uplink transmission and a downlink transmission; transmit, to auser equipment (UE), a bi-direction preemption indication indicatingthat the set of one or more resources are preempted for use for both ofthe uplink transmission and the downlink transmission; and transmit apreemption indication re-interpretation indicator indicating tore-interpret the uplink preemption indication and the downlinkpreemption indication as the bi-direction on preemption indication. 26.The apparatus of claim 25, wherein the bi-direction preemptionindication triggers rate matching for both of the uplink transmissionand the downlink transmission based on the set of one or more resources.27. The apparatus of claim 25, wherein to transmit the bi-directionpreemption indication, the at least one processor is further configuredto transmit a group common physical downlink control channel (GC-PDCCH)scrambled by a unique radio network temporary identifier (RNTI)associated with the bi-direction preemption indication, and wherein amonitoring periodicity of the GC-PDCCH is configurable.